The vertical axis had absorbance scaled from 0 to 0 .35 and the horizontal axis had time scaled from 0 to 20 minutes . Calibration of the Colorimeter for 0 transmittance (no light ) and 100 transmittance (maximum light : 5 . The outside of the cuvette was cleaned and dried using a chemwipe and the cuvette was filled 3 /4th with distilled water in a manner to avoid bubbles in the solution . The cuvette was placed in the colorimer 's cuvette slot with...











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